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If the density of the center of the sun is 1.40 g/cm3 at a pressure of 1.30 × 109 atm, calculate the temperature. Answer in units of .C
What is the volume of 3.25 moles of a gas at a temperature of 115 K and a pressure of 275 kPa?
An empty gasoline can with dimensions 15 cm by 40 cm by 12.5 cm is attached to a vacuum pump and evacuated. if the atmospheric pressure is 14.7 lb/in^2, what is the total force in pounds on the out
What is the molar mass of a gas if 0.358 g of the gas occupies a volume of 186 mL at 5.00C and 1.10 atm?
A 2.0 x 10^3 car starts from rest at the top of a driveway 5.0 meters long that slopes at 20.0 degrees with the horizontal. If an average force of 4.0 x 10^3 N impedes the motion, what is the speed
For the reaction 2 HCl + Na2CO3 ! 2 NaCl + H2O + CO2 179.2& ; liters of CO2 is collected at STP. How many moles of NaCl are also formed?
Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
The analysis of a hydrocarbon revealed that it was 85.6281% C and 14.3719% H by mass. When 2.55 g of the gas was stored in a 2.5 L flask at 127.276C, it exerted a pressure of 454 Torr. What is the
When an 89.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 1.80 x 103 J. By how much does the potential energy of a 18.0
If the reaction N2(g) + 3H2(g) ! 2NH3(g) is carried out at constant temperature and pressure, how much H2 is required to react with 6.4 L liters of N2?
A loudspeaker of mass 21.0 is suspended a distance of = 2.20 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.30 .
To what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Using Newton's laws, calculate , the magnitude of the normal force that the floor exerts on the chair.
A 2.50 g bullet, traveling at a speed of 395 m/s, strikes the wooden block of a ballistic pendulum, such as that in the figure below. The block has a mass of 265 g. How high does the combination ri
Lipitor,a pharmaceutical drug that has been shown to lower "bad"cholesterol levels while raising "good" cholesteral levels inpatients taking the drug, had over $11 billion in sales in 2006.Assuming
What is the acceleration of two falling sky divers (mass 113.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight?
An element has two isotopes with masses of 62.9396 u and 64.9278 u,and 30.83% of the atoms are the heavier isotope. Calculate the atomic mass of this element and give its name and symbol.
The spring constant for the tendon is the same for both groups, 33 N/mm. What is the difference in maximum stored energy between the sprinters and the nonathletes?
How much heat is required to raise the temperature of 0.362kg of copper from23.0C to 60.0 C. The specific heat is 0.920 (g. C).
The volume (in m3 at STP) and composition of the off-gases when air 20% (by volume) in excess of the theoretical requirement is used.
A rifle with a barrel length of 64 cm fires a 9 g bullet with a horizontal speed of 450 {rm m/s}. The bullet strikes a block of wood and penetrates to a depth of 12 cm.
The concentration of C20H42 (FM 282.55) in winter rainwater is 0.2 ppb. Assuming that the density of rainwater is close to 1.00 g/mL, find the molar concentration of C20H42.
A 13 g bullet traveling 236 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 179 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bull
Determine the work done by (a) the force F (b) gravity (c) the normal force between the block and the wall
What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing?